martin



`me. 14 wm..

Filed DEC. 22, 192?.

mmm

Patented ct. 14, 1924W UNITESTMTES Application 'filed lleeeinher 22, 19253.

.T all @1J/1,0m may concer/21,.

Be it known that l, ller/rui' lvlhr'riu7 a citizen oit the lfluited l-tltates, and a resident of the city ot New York, borough oil? lroolrlyn, in the county oit lilings and State ot New York, have invented certain nen1 and useful lu ui'overnents in a Portable @recondary llattery, ol which the following is a speeilication.,

Among; the prineipal objects which the present invention has in vievv are: to :taeilitate the introduction oli electrolyte to the various cells comprising' the battery; to economies the space required tor transporting the battery; to inerease the eflieiiency ot portable batteries; and to simpli'ly and eheapen the construction.

Dret/lngs.

Des oription.

As seen in the dra ivii'ipgs the lmttery when mounted Consists ot a number o'l cells 5l, 9 and 10.

The eell 5l is distinguished from the other cells mentioned. in that it has a perforation to receive the Filling tube 11.

The eell 9 has a valve tube. 'l2 which pro-l vides seats oppositely ',posed, one for the lower end ot a connecting tube 13, and the other lor a valve 14; mounted at the upper end ot a float 15.

The eell 1() pro vided with the valve tube 12 to reeeive the connecting,n tube 13 and provides seats ttor the said tube and the valve 11h The cell. 10, however, has no eonneeting tube 13 but is full bottomed.

In every battery there will be one cell 8 and one cell 10. rlhere may be a number ot the cells 9 interposed in series between the said cells 8 and 10. All cells are comieeted in vertical columns or in superposed relau tion, the idea beingthat the liquid or sleea trolyte which is delivered to the uppermost Cell 8 through the tube 11 will be in turn transferred to the cells 9 and the cell 1U through the connecting` tubes 13. llt is obf vious that il the valves lll are not seated that as the electrolyte is delivered to the cells to a depth to overflow the intake end of the tubes 13, the electrolyte will pass to the lowermost cell until the liquid in said cell buoys the :Float l5 in said cell to seat the 'valve 14;.

lt will be observed by reference to Figure 'l oit the drawings that the buoyancy of the lloat 15 Closes the valve 141 when the liquid has reaehed a level below the valve 1li and the seat thereof. llllhen the valve le in the cell. l() is seated, the eell 9 begins to lill. This continues until the valve 111- in the eell 9 closes, when the eleetrolyte begins to aecumulatie in the eell 8. lt will be seen that as the electrolyte in any of the lower cells is dissipated, the liquid from the upper cells replaees it. 'lllie need of supply of Water or eleetrolyte to the battery can` therefore be determined by the observation of the top oell only, as this eell is the only one oit the battery which is not automatically supplied.

The lugs 16 oil? the various elements or plates are connected by the bus bars 1'? ot usual construction, said bars in the various cells being; properly connected by jumpers 15% whieb Connect the positive plates oit the one cell with the negative plates ot the adjaeent cell. @are is taken to separate the jumpers it lroiin one another, as by the use ot an insulating separator 19, best shown in .Figures l and Zot' the drawings. The juniper ltl ol the last or lowerlnost cell is eleetrie ly coiuieeted with a push button 20, the edzreinity Whereoil engages the central contact ot a glow lamp 21 used in the 'flashlight type ot equipment. rllhe soclzet 22 of the said lamp is connected by means of a short jumper with one of the terminals or bus bars of the uppermost cell. It is obvious that care should be exercised to Connect the jumper 3 with the pole ot the upper eell opposite to the pole of the lower eell With which the push button 9;() is connected.

tu elevator serevv Ql is suitably mounted in the bottom 25 ofthe battery casing 26; By means ol this sereyv it will be seen pressure may be applied on the various cells to seat :lirinly the tapered ends of the tubes 11, 13 and 13 in the respective seats provided therefor in the tubes 12. `When using' the battery, the push button 20 is pushed in and drawn out in the manner usual With batteries ol this character.

l`he battery plates 2l' in the cells such as 9 and 10 having; the valves lll, are out avvay to form recesses 28 to provide space for the rise and fall of the lloat l5 when operating to close or open the valves.

Claims.

separate the contents of adjacent cells.

2. A battery as characterized comprising a plurality ofi cells disposed in superposed relation, each cell being supplied with electrolyte from the cell adjacent thereto and of a higher lever; and float-actuated valves mounted in each cell operable tor discontinuing the supply of liquid from the feeding cell.

3. A battery having a plurality ot cells equipped with metallic plates oit opposite potential, and a liquid electrolyte; means connecting said cells in Series ttor supplying electrolyte progressively from cell to cell; and means ifo-r automatically terminatingl the. supply between any tivo cells, said means embodying a float-actuated valve for shutting ofi1 the supply and separating the electrolyte contained in the adjacent cell.

l. In a battery as characterized, a plurality ol superposed inter-communicating cells; means floated by the electrolyte in each cell for discontinuing the supply thereof trom an adjacent cell.; and a plurality ol' metallic battery platesv oit opposite potential, said plates being cut a wayV to provide operating space for the flotation means above mentioned.

A battery as characterized. comprising: a plurality oit cells supported one upon the other, means connectingl said cells at the centers the-reet 'for transferring a liquid electrolyte troni the upper oli said cells to the lower thereof, and means for automatically stopping the transfer of the electrolyte when cach ol? said cells has been filled to a predetern'iined level therein.

6. battery characterized, comprising a plurality of cells supported one upon thi` other,v means connectingsaid cells at the centers thereof Afor transferring a liquid electrolyte from the upper ot said cells io the lower thereofn and means 'tor successiif'ely stopping the transfer ofi the electro lyte when each Ot' said cells has lieen filled to e predetermined level therein.

T. A buttery as characterizcdv` rompi-isine` a casing, a plurality oli cells nested within said casingone above vhe other. means for transierring` a liquid electrolyte it'roin the upper oi` said cells to the lower thereof. a Yfilling member connecting` the upper ot said cells and opening through the top .i'all or said casing, and means lor successivelystopping the transfer oi the electrolyte when each of said cells has been filled to a predeterinined level therein.

RALPH M'llllf l L. 

